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Author Question: Which of these substances must be primordial? A) helium B) lithium C) deuterium D) beryllium ... (Read 164 times)

ts19998

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on: Jul 27, 2018
Which of these substances must be primordial?
 
  A) helium
  B) lithium
  C) deuterium
  D) beryllium
  E) tritium

Question 2

Mars has an axial tilt more like the Earth's than any other planet.
 
  Indicate whether the statement is true or false


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katara

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

TRUE


ts19998

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Reply 2 on: Jul 27, 2018
Wow, this really help

tranoy

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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